[FFmpeg-user] High memory usage when merging videos
Jonathan Girven
jonathan.girven at trickbook.com
Tue Dec 6 13:24:23 EET 2016
I use FFmpeg in my Android app to merge videos together. I have
compiled an executable file that is run using ProcessBuilder. I am
finding that with my recent FFmpeg build (updated FFmpeg and libraries
to git master from a 2015 build[1]) the FFmpeg process is now being
killed by Android for high memory usage. Is there some way I can log
where the memory is being used by FFmpeg? E.g. the frames are being
loaded into memory much faster than X complex filter can process them?
ffmpeg -y -i new_504c08fa-6c0c-40e3-a59c-93a37d73d364.mp4 -i
new_921ff756-bfd9-4ac0-b2fc-15c4d6a46c3d.mp4 -i video_stamp_720.png -f
lavfi -i color=black:s=1280x720 -filter_complex
[0:v]trim=0.0:14.59,setpts=PTS-STARTPTS[v0_trim0];[0:a]atrim=0.0:14.59,asetpts=PTS-STARTPTS[a0_trim0];[v0_trim0]scale=iw*min(1280/iw\,720/ih):ih*min(1280/iw\,720/ih),pad=1280:720:(ow-iw*min(ow/iw\,oh/ih))/2:(oh-ih*min(ow/iw\,oh/ih))/2,fade=t=in:st=0:d=1.0:alpha=1,fade=t=out:st=13.59:d=1.0:alpha=1,format=pix_fmts=yuva420p[v0];[a0_trim0]afade=t=in:st=0:d=1.0,afade=t=out:st=13.59:d=1.0[a_fade0];aevalsrc=0:d=0.0[na0];[na0][a_fade0]concat=n=2:v=0:a=1[a0];[1:v]trim=0.0:4.65,setpts=PTS-STARTPTS[v1_trim1];[1:a]atrim=0.0:4.65,asetpts=PTS-STARTPTS[a1_trim1];[v1_trim1]scale=iw*min(1280/iw\,720/ih):ih*min(1280/iw\,720/ih),pad=1280:720:(ow-iw*min(ow/iw\,oh/ih))/2:(oh-ih*min(ow/iw\,oh/ih))/2,fade=t=in:st=0:d=1.0:alpha=1,fade=t=out:st=3.65:d=1.0:alpha=1,format=pix_fmts=yuva420p,setpts=expr=PTS-STARTPTS+13.59/TB,fifo[v1];[a1_trim1]afade=t=in:st=0:d=1.0,afade=t=out:st=3.65:d=1.0[a_fade1];aevalsrc=0:d=13.59[na1];[na1][a_fade1]concat=n=2:v=0:a=1[a1];[a0][a1]amix=inputs=2[amixed];aevalsrc=0:d=0[sa0];[sa0][amixed]concat=n=2:v=0:a=1[complete_audio];[complete_audio]volume=1.0[audio_vol];[3:v]trim=duration=18.24[over0];[over0][v0]overlay=eof_action=pass[over1];[over1][v1]overlay=eof_action=pass[over2];[over2][2:v]overlay=0:0,format=yuva420p[over3]
-vcodec libx264 -preset faster -map [over3] -map [audio_vol] -c:a
libfdk_aac -ac 2 -b:a 128k -strict -2
new_50a51bd8-9a96-4c6c-afb2-95a2e130de89.mp4
ffmpeg version N-82612-g81147b5 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.9 (GCC) 20140827 (prerelease)
configuration: --target-os=linux
--prefix=/home/jon/workspace/writing-minds-ffmpeg-android/ffmpeg-build/armeabi-v7a
--enable-cross-compile --arch=arm
--cc=/home/jon/Development/android-ndk-r10e/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc
--sysroot=/home/jon/Development/android-ndk-r10e/platforms/android-5/arch-arm/
--cross-prefix=/home/jon/Development/android-ndk-r10e/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-
--nm=/home/jon/Development/android-ndk-r10e/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-nm
--sysroot=/home/jon/Development/android-ndk-r10e/platforms/android-5/arch-arm/
--disable-shared --enable-static
--extra-cflags='-I/home/jon/workspace/writing-minds-ffmpeg-android/ffmpeg-build/armeabi-v7a/include
-O3 -fPIE -pie -mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=armv7-a
' --extra-ldflags='-L/home/jon/workspace/writing-minds-ffmpeg-android/ffmpeg-build/armeabi-v7a/lib
-fPIE -pie' --enable-gpl --enable-libfdk-aac --enable-libx264
--enable-jni --enable-mediacodec --enable-nonfree --enable-pic
--enable-version3 --enable-zlib --disable-debug --disable-doc
--disable-ffplay --disable-ffprobe --disable-ffserver
--disable-outdevs --disable-decoders
--enable-decoder='mpeg4,aac,h264,mpegvideo,mpeg1video,mpeg2video,png,mjpeg,rawvideo,mp3,pcm_s16le,pcm_u8'
--disable-encoders
--enable-encoder='mpeg4,aac,h264,libx264,mpeg1video,mpeg2video,png,mjpeg,libfdk_aac,rawvideo,pcm_s16le,wrapped_avframe'
--disable-parsers
--enable-parser='aac,mpeg4video,ac3,h261,h264,vc1,mpegvideo'
--disable-demuxers
--enable-demuxer='aac,h264,mpegvideo,m4v,mov,vc1,mp4,concat,image2,mpegts,mp3,pcm_s16le'
--disable-muxers
--enable-muxer='h264,mpeg1video,mpeg2video,m4v,mov,vc1,md5,mp4,image2,mpegts,segment,null'
--disable-filters
--enable-filter='aresample,scale,movie,overlay,color,fade,afade,pad,asetpts,amerge,aevalsrc,concat,amix,colorchannelmixer,eq,hue,atempo,hflip,vflip,transpose,volume,anullsrc'
libavutil 55. 41.101 / 55. 41.101
libavcodec 57. 66.107 / 57. 66.107
libavformat 57. 58.100 / 57. 58.100
libavdevice 57. 2.100 / 57. 2.100
libavfilter 6. 67.100 / 6. 67.100
libswscale 4. 3.101 / 4. 3.101
libswresample 2. 4.100 / 2. 4.100
libpostproc 54. 2.100 / 54. 2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
'new_504c08fa-6c0c-40e3-a59c-93a37d73d364.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.58.100
Duration: 00:00:14.62, start: 0.000000, bitrate: 1040 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
1280x720 [SAR 1:1 DAR 16:9], 891 kb/s, 29.97 fps, 29.97 tbr, 30k tbn,
59.94 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
stereo, fltp, 139 kb/s (default)
Metadata:
handler_name : SoundHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from
'new_921ff756-bfd9-4ac0-b2fc-15c4d6a46c3d.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.58.100
Duration: 00:00:04.64, start: 0.000000, bitrate: 932 kb/s
Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
1280x720 [SAR 1:1 DAR 16:9], 778 kb/s, 59.94 fps, 59.94 tbr, 60k tbn,
119.88 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
stereo, fltp, 140 kb/s (default)
Metadata:
handler_name : SoundHandler
Input #2, image2, from 'video_stamp_720.png':
Duration: 00:00:00.04, start: 0.000000, bitrate: 478 kb/s
Stream #2:0: Video: png, pal8(pc), 1280x720, 25 tbr, 25 tbn, 25 tbc
Input #3, lavfi, from 'color=black:s=1280x720':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #3:0: Video: rawvideo (I420 / 0x30323449), yuv420p,
1280x720 [SAR 1:1 DAR 16:9], 25 tbr, 25 tbn, 25 tbc
[libx264 @ 0xb8b01f10] using SAR=1/1
[libx264 @ 0xb8b01f10] using cpu capabilities: ARMv6 NEON
[libx264 @ 0xb8b01f10] profile High, level 3.1
[libx264 @ 0xb8b01f10] 264 - core 148 - H.264/MPEG-4 AVC codec -
Copyleft 2003-2016 - http://www.videolan.org/x264.html - options:
cabac=1 ref=2 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=4 psy=1
psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1
8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0
threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1
interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2
b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=1 keyint=250
keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=20 rc=crf
mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40
aq=1:1.00
Output #0, mp4, to 'new_50a51bd8-9a96-4c6c-afb2-95a2e130de89.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.58.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021),
yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25
tbc (default)
Metadata:
encoder : Lavc57.66.107 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1: Audio: aac (libfdk_aac) ([64][0][0][0] / 0x0040),
44100 Hz, stereo, s16, 128 kb/s (default)
Metadata:
encoder : Lavc57.66.107 libfdk_aac
Stream mapping:
Stream #0:0 (h264) -> trim
Stream #0:1 (aac) -> atrim
Stream #1:0 (h264) -> trim
Stream #1:1 (aac) -> atrim
Stream #2:0 (png) -> overlay:overlay
Stream #3:0 (rawvideo) -> trim
format -> Stream #0:0 (libx264)
volume -> Stream #0:1 (libfdk_aac)
Press [q] to stop, [?] for help
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514.0kbits/s speed=0.155x
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bitrate=1312.2kbits/s speed=0.166x
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frame= 111 fps=4.3 q=28.0 size= 719kB time=00:00:04.38
bitrate=1342.6kbits/s speed=0.172x
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bitrate=1355.6kbits/s speed=0.172x
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bitrate=1409.5kbits/s speed=0.18x
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bitrate=1409.1kbits/s speed=0.179x
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bitrate=1405.9kbits/s speed=0.18x
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bitrate=1401.6kbits/s speed=0.18x
frame= 249 fps=4.6 q=28.0 size= 1685kB time=00:00:09.89
bitrate=1395.7kbits/s speed=0.181x
frame= 252 fps=4.6 q=28.0 size= 1700kB time=00:00:10.00
bitrate=1391.9kbits/s speed=0.181x
frame= 255 fps=4.6 q=28.0 size= 1710kB time=00:00:10.12
bitrate=1383.9kbits/s speed=0.181x
frame= 258 fps=4.6 q=28.0 size= 1725kB time=00:00:10.24
bitrate=1379.6kbits/s speed=0.181x
frame= 261 fps=4.6 q=28.0 size= 1738kB time=00:00:10.37
bitrate=1371.9kbits/s speed=0.182x
frame= 265 fps=4.6 q=28.0 size= 1757kB time=00:00:10.54
bitrate=1365.0kbits/s speed=0.182x
frame= 268 fps=4.6 q=28.0 size= 1781kB time=00:00:10.65
bitrate=1369.3kbits/s speed=0.182x
frame= 270 fps=4.6 q=28.0 size= 1803kB time=00:00:10.72
bitrate=1377.1kbits/s speed=0.182x
frame= 273 fps=4.6 q=28.0 size= 1825kB time=00:00:10.86
bitrate=1376.1kbits/s speed=0.182x
frame= 276 fps=4.6 q=25.0 size= 1853kB time=00:00:10.98
bitrate=1382.2kbits/s speed=0.181x
frame= 280 fps=4.6 q=28.0 size= 1878kB time=00:00:11.12
bitrate=1383.4kbits/s speed=0.182x
frame= 283 fps=4.6 q=28.0 size= 1929kB time=00:00:11.26
bitrate=1403.6kbits/s speed=0.183x
frame= 285 fps=4.6 q=28.0 size= 1945kB time=00:00:11.33
bitrate=1406.4kbits/s speed=0.182x
frame= 288 fps=4.6 q=28.0 size= 1958kB time=00:00:11.44
bitrate=1401.2kbits/s speed=0.182x
frame= 290 fps=4.6 q=28.0 size= 1975kB time=00:00:11.54
bitrate=1402.1kbits/s speed=0.182x
frame= 292 fps=4.6 q=28.0 size= 1985kB time=00:00:11.60
bitrate=1400.3kbits/s speed=0.182x
frame= 295 fps=4.6 q=28.0 size= 2003kB time=00:00:11.74
bitrate=1396.7kbits/s speed=0.183x
frame= 298 fps=4.6 q=28.0 size= 2028kB time=00:00:11.84
bitrate=1403.2kbits/s speed=0.182x
frame= 301 fps=4.6 q=28.0 size= 2043kB time=00:00:11.98
bitrate=1397.0kbits/s speed=0.183x
frame= 304 fps=4.6 q=28.0 size= 2059kB time=00:00:12.09
bitrate=1394.3kbits/s speed=0.183x
frame= 306 fps=4.6 q=28.0 size= 2066kB time=00:00:12.16
bitrate=1390.9kbits/s speed=0.183x
frame= 309 fps=4.6 q=28.0 size= 2085kB time=00:00:12.28
bitrate=1390.8kbits/s speed=0.183x
frame= 312 fps=4.6 q=28.0 size= 2106kB time=00:00:12.42
bitrate=1388.7kbits/s speed=0.183x
frame= 314 fps=4.6 q=28.0 size= 2130kB time=00:00:12.49
bitrate=1396.8kbits/s speed=0.183x
frame= 318 fps=4.6 q=28.0 size= 2152kB time=00:00:12.65
bitrate=1393.0kbits/s speed=0.183x
frame= 320 fps=4.6 q=28.0 size= 2168kB time=00:00:12.74
bitrate=1393.1kbits/s speed=0.183x
frame= 324 fps=4.6 q=28.0 size= 2195kB time=00:00:12.88
bitrate=1395.0kbits/s speed=0.183x
frame= 328 fps=4.6 q=28.0 size= 2215kB time=00:00:13.04
bitrate=1390.3kbits/s speed=0.184x
frame= 330 fps=4.6 q=28.0 size= 2232kB time=00:00:13.14
bitrate=1391.0kbits/s speed=0.184x
frame= 334 fps=4.6 q=28.0 size= 2257kB time=00:00:13.28
bitrate=1392.1kbits/s speed=0.183x
frame= 336 fps=4.6 q=28.0 size= 2267kB time=00:00:13.39
bitrate=1386.2kbits/s speed=0.184x
frame= 339 fps=4.6 q=28.0 size= 2290kB time=00:00:13.49
bitrate=1390.5kbits/s speed=0.184x
frame= 341 fps=4.6 q=28.0 size= 2304kB time=00:00:13.60
bitrate=1386.9kbits/s speed=0.184x
frame= 343 fps=4.6 q=28.0 size= 2314kB time=00:00:13.69
bitrate=1383.6kbits/s speed=0.184x
frame= 345 fps=4.6 q=28.0 size= 2328kB time=00:00:13.79
bitrate=1382.6kbits/s speed=0.184x
frame= 347 fps=4.6 q=28.0 size= 2335kB time=00:00:13.86
bitrate=1380.0kbits/s speed=0.183x
frame= 349 fps=4.6 q=28.0 size= 2349kB time=00:00:13.93
bitrate=1381.2kbits/s speed=0.183x
frame= 351 fps=4.6 q=28.0 size= 2357kB time=00:00:14.02
bitrate=1376.6kbits/s speed=0.183x
frame= 353 fps=4.6 q=28.0 size= 2366kB time=00:00:14.11
bitrate=1373.1kbits/s speed=0.183x
frame= 355 fps=4.6 q=28.0 size= 2379kB time=00:00:14.16
bitrate=1376.0kbits/s speed=0.182x
frame= 357 fps=4.6 q=28.0 size= 2395kB time=00:00:14.23
bitrate=1378.2kbits/s speed=0.182x
frame= 359 fps=4.6 q=28.0 size= 2414kB time=00:00:14.32
bitrate=1380.1kbits/s speed=0.182x
frame= 361 fps=4.6 q=28.0 size= 2424kB time=00:00:14.39
bitrate=1379.1kbits/s speed=0.182x
frame= 363 fps=4.5 q=28.0 size= 2443kB time=00:00:14.48
bitrate=1381.1kbits/s speed=0.182x
frame= 365 fps=4.5 q=28.0 size= 2455kB time=00:00:14.60
bitrate=1377.2kbits/s speed=0.182x
frame= 365 fps=4.5 q=28.0 size= 2455kB time=00:00:14.86
bitrate=1353.5kbits/s speed=0.184x
frame= 365 fps=4.5 q=28.0 size= 2455kB time=00:00:15.11
bitrate=1330.7kbits/s speed=0.186x
frame= 365 fps=4.5 q=28.0 size= 2455kB time=00:00:15.34
bitrate=1310.5kbits/s speed=0.187x
frame= 365 fps=4.4 q=28.0 size= 2455kB time=00:00:15.51
bitrate=1296.8kbits/s speed=0.188x
frame= 365 fps=4.4 q=28.0 size= 2455kB time=00:00:15.69
bitrate=1281.4kbits/s speed=0.189x
frame= 365 fps=4.4 q=28.0 size= 2455kB time=00:00:15.97
bitrate=1259.1kbits/s speed=0.192x
frame= 365 fps=4.3 q=28.0 size= 2455kB time=00:00:16.16
bitrate=1244.6kbits/s speed=0.193x
frame= 365 fps=4.3 q=28.0 size= 2455kB time=00:00:16.39
bitrate=1227.0kbits/s speed=0.194x
frame= 365 fps=4.3 q=28.0 size= 2455kB time=00:00:16.62
bitrate=1209.9kbits/s speed=0.196x
frame= 365 fps=4.3 q=28.0 size= 2455kB time=00:00:16.76
bitrate=1199.8kbits/s speed=0.196x
processComplete: 9
I understand that my FFmpeg command does some unnecessary filtering,
e.g. scale a 720p video to be 720p, but I didn't think this would be
the main cause (maybe I am wrong?). It is in there because the command
is automatically generated and is supposed to work with many input
videos.
Performing the same command as above (2 clips), except without fifo,
completed without an error on my test device (Albeit the second clip
freezes on an early frame). Doubling everything up to 4 clips, FFmpeg
is again killed due to high memory usage. So, some improvement.
I can see in dmesg, when the process is killed:
<4>[ 9706.743390,3] send sigkill to 26935 (ffmpeg), adj 0, size 114805
Apologies if you have already seen this on SuperUser and were unable
to help then.
[1]: http://superuser.com/questions/1148520/ffmpeg-crf-compression-slower-on-master-than-old-version
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